近年來,寬頻無線技術正處於有史以來成長速度最快,WiMAX夾帶的通訊範圍廣大、資料傳輸的速度快、並且在行動通訊的限制上有很大的突破,在不久的將來行動式 OFDMA 的應用可能會成為下一代行動技術普遍的需求。 在本篇論文中,依據IEEE802.16e的規格,利用Simulink模擬系統,在系統中採用的是QPSK的調變,將整體系統經由電腦模擬顯示是利用了由Lyrtech公司所出產的軟體定義無線電開發平台SFF SDR DP (Small Form Factor Soft-ware-Defined Radio Development Platform)來實現 OFDMA系統中的 DL PUSC 1024 FFT架構。在 SNR 為15(dB)時,模擬的錯誤率約為
Nowadays, the wireless broadband technology is growing fast, because of its wide communicating range, high speed data transmission, and remarkable advance beyond the limit of traditional mobile communications, the application of WiMAX technology will become a widespread demand in the next generation. In the thesis, the OFDMA system with the DL PUSC 1024 FFT structure in the IEEE 802.16e communication system adopts QPSK modulation to develop and simulate by us-ing MATLAB Simulink, and is also constructed with SFF SDR DP (Small Form Factor Software-Defined Radio Development Platform) produced by Lyrtech Co.. Consequently, the simulation result shows that with the SNR of 15 dB, the bit error rate is 4x10